Print from WhatsApp.
Send a file — a PDF, a photo, a Word or Excel document — to +1 (347) 746‑8455 on WhatsApp, choose a printer once, and it prints there. The printer answers on WhatsApp when the job is taken, and tells you if it runs out of paper.
Write them in the file's caption: a number = copies (up to 50), bw = black and white, ds = double‑sided. Example: 3 bw ds.
App2print is a private service for the printers it is set up with.